#include <bits/stdc++.h>

using namespace std;
using LL = long long;

const int MAXN = 1e5 + 3;

int n;
int a[MAXN];
int dp[MAXN];
vector<int> s[MAXN];

int main(){
  ios::sync_with_stdio(0), cin.tie(0);
  cin >> n;
  for(int i = 1; i <= n; i++){
    cin >> a[i];
    if(s[a[i]].size() > 0) continue;
    for(int j = 1; j * j <= a[i]; j++){
      if(a[i] % j == 0){
        s[a[i]].push_back(j);
        if(a[i] / j != j) s[a[i]].push_back(a[i] / j);
      }
    }
  }
  int ans = 0;
  for(int i = n; i >= 1; i--){
    dp[a[i]]++;
    ans = max(ans, dp[a[i]]);
    for(int j : s[a[i]]){
      dp[j] = max(dp[j], dp[a[i]]);
    }
  }
  cout << ans;
  return 0;
}